Automatic firearm.



I. JOHNSON.

AUTOMATIC FIREARM.

APPLICATION FILED 123.15, 1911.

Patented June 11, 1912.

2 SHEETS-SHEET 1.

WI TNE 88E 8:

I. JOHNSON.

AUTOMATIC FIREARM.

APPLICATION FILED FBB.15,1911.

k Q WITNESSES. /7/6 IIVVENTOR NITED STATES PATENT OFFICE.

IVAR JOHNSON, OF BEDLANDS, CALIFORNIA, ASSIGNOR OF ONE-HALF TO CHARLES E. IDE, OF REDLANDS, CALIFORNIA,

AUTOMATIC FIREARM.

To all whom it may concern:

Be it known that I, IVAR JOHNSON, residing in Redlands, in the county of San Bernardino and State of California, have invented a useful and new Improvement in Automatic Firearms, of which the following is a specification.

My invention relates to certain new and useful improvements in firearms and it particularly has for its object to provide an improved construction of magazine firearm of the type wherein the cartridges are contained in longitudinal alinement in a magazine and are fed up into alinement with the firing barrel bore and firing pin of the firearm upon operation of the same.

The invention particularly resides in providing a firearm of the type stated wherein the cartridge carrying plunger is operated by an auxiliary trigger mounted in the cocking and firing trigger in such manner that the first part of the movement of the operators finger will serve to feed the cartridge from the magazine into alinement with the barrel and firing pin and further movement will effect the cocking and firing of the instrument to cause the hammer mechanism to impact the firing pin to fire the cartridge.

Another object of my invention is to provide a firearm in which the fired cartridge is automatically ejected, when the triggers are released and moved back to their original position, through an opening in the side of the firearm, which is normally closed by a slide; and the invention also has for its object to provide a means for automatically opening the slide to permit the cartridge being ejected, to pass out of the opening.

The invention also includes an improved means for feeding the cartridge into posi tion to be moved by the auxiliary trigger actuated device into position for firing.

The invention further includes those novel details of construction, combination and arrangement of parts all of which will be first fully described and then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which,

Figure 1, is a perspective view showing the invention applied to a small firearm of the pistol or revolver type, a fired cartridge just being ejected. Fig. 2, is a top plan view of the firearm. Fig. 3, is a side elevation Specification of Letters Patent.

Application filed February 15, 1911.

Patented June 11, 1912. Serial No. 608,684.

of the same broken. Fig. 4, is a central vertical longitudinal section of the same, the parts being in their normal position. Fig. 5, is a view similar to Fig. 4 showing the position of the parts when the auxiliary trigger has been moved to move a cartridge into position. Fig. 6, is a view similar to Fig. 5, the triggers having been moved to the cocking position. Fig. 7, is a view similar to Figs. 5 and 6, the triggers having been moved to the firing position and the hammer having been released to effect the firing of the cartridge. Fig. 8, is a cross section on the line 8 8 of Fig. 4. Fig. 9, is a cross section on the line 99 of Fig. 4. Fig. 10, is a cross section on the line 10-1O of Fig. 4. Fig. 11, is a cross section on the line 11-11 of Fig. 7. Fig. 12, is a horizon tal section on the line 12-12 of Fig. 5.

Referring now to the accompanying drawings in which like numbers and letters of reference indicate like parts in all of the figures, 1 designates the barrel of the firearm which contains the firing bore 2 and the magazine 8. The magazine 3 is closed at the front as at 4 and both the magazine 3 and firing bore 2 communicate with the chamber 5 above the trigger mechanism in which the plunger 34 operates to move the cartridge 50 into position. The magazine 3 includes a shallow longitudinal groove 6 in which the follower block strap 8 is located. The follower block 7 is moved along the magazine 3 from its closed end 4 toward the chamber 5 by the strap 8 which passes over the pin 9 and winds around the spindle or shaft 10 which is turned under the influence of the spring 37, see Fig. 11. The barrel section 1 is pivoted at 11 to the stock section 17 to break as indicated in Fig. 3 and the barrel and stock sections are locked together by a latch device 14 which is pivoted at 15 and engages the abutments 16 of the stock 17. The barrel section includes a depending portion 12 at its inner end which forms the inner stop or abutment for the cartridge 50 and. feeding block 34 and it also serves as the containerfor the firing pin mechanism 13 which may be of any approved type. The stock 17 includes the hollow handle 18 the removable sides of which are secured together by the screw 19.

20 designates the hammer which is pivoted at 21 and moved by the spring 22 to impact the member 23 at the moment of firing. The hammer setting and firing mechanism includes the member 23 which is piv oted at 27 to the main trigger 28, and which is held in engagement with the hammer 20 by the spring 26 under ordinary conditions. The cooking and firing mechanism also in eludes the sear 24. The cooking and firing parts 20, 21, 22, 23, 24 and 26 maybe of any approved type and I do not wish to be confined to the construction illustrated. The main trigger 28 is pivoted at 29 and held in its normal position by a leaf spring 25. The trigger 28 is cut out to receive an auxiliary trigger 30 which is pivoted to the main trigger 28 at 31 and has an arm that is pivoted at 32 to a connecting link 33 which is in turn pivoted at 35 to the feed block 34. The auxiliary trigger 30 may be held in its normal position by a spring 36 that also serves to retract the block 34 when the triggers are released. The stock 17 is provided with an opening 38 in its side, that is normally closed by a slide 39 having finger engaging members 40 by means of which it may be operated. The slide 39 when opened moves into a pocket 41 which contains a spring 42 that holds the slide nor mally closed. In order to provide for the automatic opening of the slide, it is provided with a teat 43 on its inner face which, when the plunger or block 34 is in position shown in Fig. 5 enters a recess 44 in the plunger. As the plunger moves down from the position shown in Fig. 5 to the posit-ion shown in Fig. 4, the slide 39 will be moved down with it thus permitting the spring 45 to push the dropping empty shell out through the opening 38 and thereby eject the same. The spring 45 is secured in any desired Way in a recess in the side wall of the stock 17. As the block 34 moves down wardly the slide 39 will reach the downward limit of its movement before the block 34 does, and thus eticct a disengagement of the block and slide to permit the spring 42 to close the slide 39 again.

So far as described the manner in which the invention operates will best be explained as follows: In loading the magazine, the operator opens the slide 39 through the medium of the thumb piece 40 and inserts the cartridges into the chamber 5 pushing them into the magazine against the follower block 7 until the required number have been inserted after which he releases the slide 39 to close the opening 38. In firing tl weapon, the operator pulls the trigger in the usual manner and in doing so he first moves the trigger 30 from the position shown in Fig. 4 to the position shown in Fig. 5, at which time his finger engages the main trigger 28 and further movement re sults in moving both triggers from the position shown in Fig. to the position shown in Fig. 6 (the cocking position) and finally to the position shown in Fig. 7 (the firing position). In moving the trigger 30 from the position shown in Fig. 4 to the position shown in Fig. 5, the feed block 34 is moved upwardly, carrying with it the cartridge from the position shown in Fig. 4 to the position shown in Fig. 5. As the triggers are moved from the position shown in Fig. 5 through the position shown in Fig. 6 to the position shown in Fig. 7, the block 34 Will tightly grip the shell of thecartridge 50 and hold it with the bullet 51 in true alinement with the bore 2 of the barrel section 1 so that when the hammer 20 is released in moving from the position shown in Fig. 6 to the position shown in Fig. 7, the firing pin 13 will impinge the primer of the cartridge and explode the same. Upon releas ing the triggers, the springs 25, 26 and 36 return the parts to their normal position and in doing so the slide 39 is lowered to open the opening 38 and permit the spring 45 to ejectthe fired shell as before described and as soon as the block 34 is restored to the position shown in Fig. 4, a second cartridge will be pushed into position by the block 7 under the influence of the spring 37, when the foregoing cycle of operations may be repeated.

From the foregoing it will be seen I have provided a simple and effective construction of firearms which may be applicable to large 'as well as small firearms of all kinds and I do not desire to limit myself to the special details of construction which may be readily modified to adapt the invention to the various types of firearms now employed without departing from the spirit of the invention and the scope of the appended claims.

\Vhat I claim is:

1. In a firearm, a barrel section and a stock section, said barrel section. having a firing bore and a cartridge magazine, and a chamber with which said bore and magazine communicate, means for feeding cartridges into said chamber from said maga- Zine, a cocking and firing mechanism in cluding a main operating trigger, a plunger for moving the cartridges along said chamher into alinement with the firing bore and an auxiliary trigger connected with said plunger for actuating the same.

2. In a firearm, a barrel section including a firing bore and a cartridge magazine and a chamber with which said magazine and bore communicate, a plunger operating in said chamber means for feeding cartridges along said magazine into said chamber to be engaged by said plunger, a firing mecha nism including a. main trigger, an auxiliary trigger mounted on said main trigger and connected with said plunger and operating upon the first part of the movement of the finger of the operator to move a cartridge from alinement with the magazine into alinement with the firing bore before the main trigger is moved.

In a firearm, a barrel section including a firing bore and a cartridge magazine and a chamber with which said magazine and bore communicate, a plunger operating in said chamber, means for feeding cartridges along said magazine into said chamber to be engaged by said plunger, a firing mechanism including a main trigger, an auxiliary trigger mounted on said main trigger and connected with said plunger and operating upon the first part of the movement of the finger of the operator to move a cartridge from alinement with the magazine into alinementwith the firing bore before the main trigger is moved and then moving with the main trigger on further movement of the finger of the operator to cause the main trigger to actuate the cocking and firing mechanism.

4. In a firearm, a barrel section including a firing bore and a cartridge magazine and a chamber with which said magazine and bore communicate, a plunger operating in said chamber, means for feeding cartridges along said magazine into said chamber to be engaged by said plunger, a firing mechanism including a trigger, an auxiliary trigger mounted on said main trigger and connected with said plunger and operating upon the first part of the movement of the finger of the operator to move a cartridge from alinement with the magazine into alinement with the firing bore before the lnain trigger is moved, said firearm including a shell discharge opening, a slide closing said opening, means for restoring said plunger to its initial position, and means for opening said slide as said plunger moves to its initial position to permit the ejection of the fired shell.

5. In a firearm, a barrel section including a firing bore and a cartridge magazine and a chamber with which said magazine and bore communicate, a plunger operating in said chamber, means for feeding cartridges along said magazine into said chamber to be engaged by said plunger, a firing mechanism including a trigger, an auxiliary trigger mounted on said main trigger and connected with said plunger and operating upon the first part of the movement of the finger of the operator to move a cartridge from alinement with the magazine into alinement with the firing bore before the main trigger is moved and then moving with the main trigger on further movement of the finger of the operator to cause the main trigger to actuate the cocking and firing mechanism. said firearm including a shell discharge opening, a slide closing said opening, means for restoring said plunger to its initial poa firing bore and a cartridge magazine and a chamber with which said magazine and bore communicate, a plunger operating in said chamber, means for feeding cartridges along said magazine into said chamber to be engaged by said plunger, a firing mecha- 5 nism including a main trigger, an auxiliary trigger mounted on said main trigger and connected with said plunger and operating upon the first part of the movement of the finger of the operator to move a cartridge from alinement with the magazine into alinement with the firing bore before the main trigger is moved, said firearm including a shell discharge openin a slide closing said opening, means for restoring said 5 plunger to its initial position, and means for opening said slide as said plunger moves to its initial position to permit the ejection of the fired shell, and means for engaging the fired shell to eject it through said open- I. In a firearm having a barrel and a stock, said barrel including a firing bore, a cartrldge magazine and a chamber communicating with said bore and magazine, means 5 for feeding cartridges from said magazine into said chamber, a plunger for moving the cartridge through said chamber into alinement with the firing bore, a trigger actuated firing mechanism and means operated by 00 the trigger finger of the operator for first effecting the movement of said plunger to move the cartridge into alinement with said firing bore in advance of and independently of the movement of the trigger that actu- 05 ates the firing mechanism.

8. In a firearm, having a barrel and a stock, said barrel including a firing bore and a cartridge magazine and a chamber communicating with said bore and maga- 11 zine, means for feeding cartridges from said magazine into said chamber, a plunger for moving the cartridge through said chamber into alinement with the firing bore, a trigger actuated firing operated by the trigger finger of the operator for first effecting the movement of said plunger to move the cartridge into alinement with said firing bore in advance of the movement of the trigger that actuates the 12-0 firing mechanism, said last named means including an auxiliary trigger carried by the firing trigger and arranged to be engaged by the trigger finger of the operator in advance of the finger engaging portion of the firing trigger.

9. In a magazine firearm, the combination with the barrel having the firing bore, the magazine, and the firing mechanism; of

means actuated by the trigger finger of the mechanism and means 115 operator for moving a cartridge from alinement With the magazine into alinement with the firing bore and in advance of the operation of the firing mechanism and upon further movement of the trigger finger of the operator actuating said firing mechanism while holding said cartridge in alinement with the firing here, said firearm including a shell discharging opening, a slide closing said opening, a shell ejector, and means for 10 opening said slide .at times to permit said ejector to eject the fire shell through said opening.

IVAR JOHNSON.

\Vitnesses:

HAsnY WV. ALLEN, F. P. MESERVE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington. D. C. 

